In the future landscape of Quantum Technology a method of interconnecting different quantum systems will be required.
The prevailing direction is towards a qi [1]}, constructed by interconnecting qn.
qn have been demonstrated in both metropolitan scale [2]}, [3]} and long distance configurations [4]}, [5]}, however most have focused solely on qkd based networks.
This has been the case as the most near term application of a qi is qkd.
Methods for building qn beyond simple qkd have been explored and in general are based on ed.
Such qn have mainly used photon pair sources to distribute entanglement on a metropolitan scale [6]} and across long distance [7]}.
Some have used single photons from local quantum systems to entangle multiple systems over distance [8]}.
Progress has been made in generating multi-partite entangled photon states [9]}, but there are still challenges in producing a scalable network while connect many users together.
